166331166 has 16 divisors (see below), whose sum is σ = 335715600. Its totient is φ = 54934848.

The previous prime is 166331161. The next prime is 166331227. The reversal of 166331166 is 661133661.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166331161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126511 + ... + 127818.

It is an arithmetic number, because the mean of its divisors is an integer number (20982225).

Almost surely, 2^166331166 is an apocalyptic number.

166331166 is an abundant number, since it is smaller than the sum of its proper divisors (169384434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166331166 is a wasteful number, since it uses less digits than its factorization.

166331166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254443.

The product of its digits is 11664, while the sum is 33.

The square root of 166331166 is about 12896.9440566361. The cubic root of 166331166 is about 549.9516938290.

The spelling of 166331166 in words is "one hundred sixty-six million, three hundred thirty-one thousand, one hundred sixty-six".